<i>Yuxiensis granularis</i> gen. et sp. nov., a Novel Quellkörper-Bearing Fungal Taxon Added to <i>Scortechiniaceae</i> and Inclusion of <i>Parasympodiellaceae</i> in <i>Coronophorales</i> Based on Phylogenetic Evidence

oleh: Digvijayini Bundhun, Dhanushka N. Wanasinghe, Sajeewa S. N. Maharachchikumbura, Darbhe J. Bhat, Shi-Ke Huang, Saisamorn Lumyong, Peter E. Mortimer, Kevin D. Hyde

Format: Article
Diterbitkan: MDPI AG 2021-09-01

Deskripsi

An undetermined saprobic fungal taxon from Yunnan (China) is revealed as a new genus in <i>Scortechiniaceae</i> (<i>Coronophorales</i>). The novel taxon, <i>Yuxiensis</i>, is characterized by immersed to erumpent, semi-globose ascomata, which are not surrounded by any tomentum or conspicuous subiculum, a subcylindrical quellkörper in the centrum, clavate asci with long pedicels and allantoid hyaline ascospores with granular contents. Maximum likelihood and Bayesian posterior probability analyses based on LSU, ITS, <i>tef1</i> and <i>rpb2</i> sequence data depict a close phylogenetic relationship of the new genus to <i>Pseudocatenomycopsis</i>, hence, confirming its placement in <i>Scortechiniaceae</i>. <i>Parasympodiellaceae</i>, thus far belonging to <i>Parasympodiellales</i>, is transferred to <i>Coronophorales</i> based on multi-gene phylogenetic evidence. Additionally, the <i>incertae sedis</i> monotypic genus <i>Arthrocristula</i> is treated as a synonym of <i>Parasympodiella</i>, with <i>Arthrocristula hyphenata</i> recombined as <i>Parasympodiella hyphenata</i> comb. nov., as the type strain of <i>Arthrocristula hyphenata</i> clusters inside the <i>Parasympodiellaceae</i> clade along with other <i>Parasympodiella</i> taxa.